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Medium WID-SEC-2026-2342 2 CVEs

Grafana Tempo: Mehrere Schwachstellen ermöglichen Denial of Service

Published Jul 14, 2026 · Updated Jul 14, 2026 · de-DE

Vendor: Grafana Product: Tempo Platform: Linux

Summary

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Grafana Tempo ausnutzen, um einen Denial of Service Angriff durchzuführen.

Product

Grafana Tempo ist ein hochskalierbares, verteiltes Tracing-Backend.

Vulnerabilities 2

  • High 7.5
    CVE-2026-21728

    Tempo query limit results in unbounded memory allocation

    Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy. Mitigation can be done by setting max_result_limit in the search config, e.g. to 262144 (2^18). Alternat…

    Grafana Tempo Enterprise Traces (GET) grafana-12.3 Wolfi Go
  • Medium 6.5
    CVE-2026-27878

    Tempo TraceQL query with exemplar hint could result in unbounded memory usage

    A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash. This could allow an authenticated user to trigger a denial of service against the T…

    Grafana Tempo Enterprise Traces (GET) grafana-12.3 Wolfi Go

Revision history

  1. #1

    Initiale Fassung

References